com.flaptor.hist4j
Class HistogramNode

java.lang.Object
  com.flaptor.hist4j.HistogramNode

All Implemented Interfaces:

java.io.Serializable

Direct Known Subclasses:

HistogramDataNode, HistogramForkNode

public abstract class HistogramNode
extends java.lang.Object
implements java.io.Serializable

A HistogramNode is the building block for the histogram data structure and provides a common inteface for both the data and the fork nodes. This is an abstract class, and it is instantiated as either a fork node or a data node.

Author:

Jorge Handl

See Also:

Serialized Form

Constructor Summary

HistogramNode()

Method Summary

abstract HistogramNode	addValue(AdaptiveHistogram root, float value) Abstract method for adding a value to the histogram
abstract void	apply(AdaptiveHistogram.ValueConversion valueConversion) Abstract method for applying a convertion function to the values stored in the histogram
abstract long	getAccumCount(float value) Abstract method for getting the cumulative density function for a given value
abstract long	getCount(float value) Abstract method for getting the number of values stored in the same bucket as a reference value
abstract java.lang.Float	getValueForAccumCount(long[] accumCount) Abstract method for getting the value for which the cumulative density function reaches the desired value
protected void	margin(int level) Prints a margin corresponding to the provided tree level
abstract void	reset() Abstract method for clearing the node
abstract void	show(int level) Abstract method for showing the data structure
abstract void	toTable(java.util.ArrayList<Cell> table) Abstract method for getting a table representing the histogram data

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

HistogramNode

public HistogramNode()

Method Detail

reset

public abstract void reset()

Abstract method for clearing the node

addValue

public abstract HistogramNode addValue(AdaptiveHistogram root,
                                       float value)

Abstract method for adding a value to the histogram

getCount

public abstract long getCount(float value)

Abstract method for getting the number of values stored in the same bucket as a reference value

getAccumCount

public abstract long getAccumCount(float value)

Abstract method for getting the cumulative density function for a given value

getValueForAccumCount

public abstract java.lang.Float getValueForAccumCount(long[] accumCount)

Abstract method for getting the value for which the cumulative density function reaches the desired value

apply

public abstract void apply(AdaptiveHistogram.ValueConversion valueConversion)

Abstract method for applying a convertion function to the values stored in the histogram

toTable

public abstract void toTable(java.util.ArrayList<Cell> table)

Abstract method for getting a table representing the histogram data

show

public abstract void show(int level)

Abstract method for showing the data structure

margin

protected void margin(int level)

Prints a margin corresponding to the provided tree level